diff --git a/centos/SPECS/polemarch.spec b/centos/SPECS/polemarch.spec
index 012ad15..4072664 100644
--- a/centos/SPECS/polemarch.spec
+++ b/centos/SPECS/polemarch.spec
@@ -44,6 +44,7 @@ Requires: python38-PyMySQL
 Requires: git
 Requires: krb5-devel, krb5-libs, openldap-devel
 Requires: mailcap
+Requires: percona-server-client
 
 %description
 Polemarch is service for orchestration infrastructure by ansible.
@@ -87,6 +88,7 @@ exit 0
 %post
 %systemd_post %{name}.service
 sudo -u %{user} /opt/%{name}/bin/%{shortname}ctl migrate
+update-alternatives --set python /usr/bin/python3.8
 
 %preun
 %systemd_preun %{name}.service